My self esteem is non existent 😪

Does anyone else struggle with this? I'm almost 31 weeks pregnant, and I feel like a whale. People at work ask me if I'm sure I'm not having twins, or comment on my weight somehow. My papaw recently told me that I need to 'watch what I eat' because I'm way bigger than I'm supposed to be.. I weigh 165 lbs, and my doctor says I'm completely normal, but I can't believe it I guess. I'm really struggling with this weight gain. 😕 I know our bodies are doing something miraculous and wonderful, and I wouldn't change a thing because I love my baby more than life itself, but my confidence is at an all time low. Are any other FTM's struggling with this too? 😥